Facebook is down for required maintenance right now.

When i want to Login Facebook at 1:15:11 PMNPT From Kathmandu i saw Facebook is down for required maintenance right now .The facebook help center says about that “If you’re seeing this message when you log in, it usually means that we’re making an improvement to the database that your account is stored on. While we’re doing this, you won’t be able to access your account. We’re sorry for the inconvenience! This maintenance shouldn’t last more than a few hours.”